The lifting double-layer glass reaction kettle is filled with a constant temperature (high or low temperature) hot solution medium or cooling medium through the double-layer reaction kettle interlayer, which heats or cools the materials inside the reaction kettle at a constant temperature and can provide stirring. The material undergoes a reaction in the reactor and the evaporation and reflux of the reaction solution can be controlled. After the reaction is complete, the material can be released from the discharge port at the bottom of the reactor, making the operation extremely convenient. It is an ideal equipment for modern chemical small sample, medium sample experiments, biopharmaceuticals, and new material synthesis.